After focusing solely on attacking Mo Brooks, the Mitch McConnell-connected super PAC supporting Sen. Luther Strange is going after Roy Moore - the incumbent senator's other main rival in this month's special election primary.

In a campaign ad airing tonight, the Senate Leadership Fund is attacking Moore and his wife, Kayla Moore, for taking salaries at the Foundation for Moral Law - a charity founded by the Moores - and spending lavishly on travel while Moore was still chief justice of the Alabama Supreme Court.

Moore's campaign called the spot "slanderous."

"This slanderous ad by the Washington establishment is a massive distortion of the truth," Moore campaign chairman Bill Armistead said in an email to AL.com Tuesday night. "The Senate Leadership Fund does not seem to be able to come up with a better campaign tactic than to use untruths to demonize their opponents. They are in near panic mode fearing that Alabama voters may be about to send another conservative senator to Washington like former Sen. Jeff Sessions who will fight for our values. Judge Roy Moore is an honorable man with the unquestioned character desperately needed to fight corruption."

The super PAC's attention on Moore represents a change in strategy from just hitting Brooks, who was also up with an ad on Tuesday responding to claims from the Strange camp.

Strange, Brooks and Moore are vying for the top two spots in the Aug. 15 primary in what is likely to result in a runoff between the top two vote getters if no candidate receives a majority.

Late last week, the Senate Leadership Fund went after Brooks, who represents northern Alabama in Congress, accusing the congressman of siding with House Minority Leader Nancy Pelosi for "cutting off funding to fight ISIS."

While Brooks voted for the defense spending bills in 2016, he also voted in favor of an amendment that said the funding could not be used unless Congress adopted what's known as an authorized use of military force in Iraq and Syria. (The U.S. was still engaging in combat operations against ISIS, although it was operating under a George W. Bush-era authorized use of military force that Democrats and some Republicans said was outdated because it only applied to al-Qaeda.)

The ad also mentioned that Brooks once said that President Donald Trump couldn't be trusted - which was also the basis for the Senate Leadership Fund's first ad in the race.

Meanwhile, the congressman hit back in an ad that started airing Tuesday, citing a fivethirtyeight.com analysis that showed he House votes align with Trump's positions 95 percent of the time. He also touted his endorsements from leading conservative pundits like Ann Coulter and Sean Hannity.